Solar Panel Cleaning

With over twenty years of commercial and domestic cleaning experience, Softwashing UK is at the forefront of the softwashing industry.

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Solar panels need to be clean to generate power effectively. Softwashing is the perfect way to clean them without damaging electrics or roof tiling.

Any man-made or organic residue or film that blocks transmission of sunlight to photovoltaic solar (or thermal) panels can substantially diminish their performance. Less light means less energy, leading to a lower return on a commercial or domestic investment in renewables.

Often the offenders are moulds, algae, and bacterial atmospheric growths that can be removed by softwashing. While rainwater is thought to keep solar panels as clean as they need to be , this is not the case. 

Environmental factors such as salt in seaside locations, or dust and grime from highways and railways, can decrease output dramatically. When monitoring their own vast power usage, Google proved that regular solar panel cleaning can improve panel performance by up to 12%.

While it may seem obvious and simple to clean the panels yourself, tap water when used in isolation is not up to the task, since residues and deposits of salt and minerals on the panels are left behind after tap water treament. 

Using chemical free pure water these deposits can be eliminated. Old fashioned cleaning methods, like high pressure cleaning, are too violent for the technology, and will damage photovoltaic cells, and reduce the shelf-life and performance of solar panels.

When cleaning solar panels, we use a clearly defined softwashing process which brings these vital technologies back their optimum, using 0% chemicals and only pure water.

We use extendable water fed poles wherever possible, and cherry pickers to avoid needing unnecessary access to the roof.

We use localised soft brushes that offer maximum protection for solar panels.

Softwashing will bring your solar panels back to their peak, returning your investment and keeping them performing for as long as the sun keeps shining.

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Why Choose Softwashing UK For Solar Panel Cleaning Services?

Solar panels are an excellent investment for homes and businesses across the UK, offering clean, renewable energy. However, over time, panels can become coated with dirt, bird droppings, lichen, moss, and other debris — all of which can reduce their efficiency. That’s where Softwashing UK comes in.

We offer professional solar panel cleaning using specialist soft washing technology — a safer, longer-lasting alternative to abrasive or high-pressure methods.

1. Specialised Soft Wash Technology

Unlike high-pressure cleaning, which can damage the delicate surface and seals of your solar panels, our low-pressure soft wash system uses pure water and biodegradable cleaning solutions. This method safely removes dirt and organic build-up without scratching or harming your panels.

Our soft washing not only restores the appearance of your solar panels — it helps maintain their performance. By removing contaminants that block sunlight, we help your panels operate more efficiently, meaning better energy output and reduced electricity bills.

We don’t just clean — we treat. Our softwash solution includes a biocidal component that kills moss, algae, and lichen at the root, preventing regrowth and ensuring your panels stay cleaner for longer.

Our gentle cleaning process protects the integrity of your solar panels while being tough on grime. It lifts away years of environmental build-up without compromising any protective coatings or fixtures.

When you choose Softwashing UK, you’re choosing fully trained, certified, and insured professionals. Our team is experienced in the correct cleaning techniques for solar panels and uses only safe, industry-approved equipment and products.

Our cleaning solutions are pH neutral, fully biodegradable, and environmentally responsible. They’re completely safe for children, pets, and your garden — ensuring that your solar cleaning project is as green as your energy.

We pride ourselves on outstanding customer service from start to finish. Whether it’s your first enquiry or the final rinse, we ensure excellent communication, punctuality, and results that exceed expectations.

Regular cleaning protects your investment. Our service not only enhances the look of your solar panels but also helps preserve their performance and longevity by preventing damage caused by biological growth and dirt accumulation.

OUR TESTIMONIALS

Our Satisfied Client Feedback

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Olga Tucka profile picture
Olga Tucka
109 days ago
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​Best in the area! Fantastic communication and service, and the quote matched the final price; on time and were incredibly kind and polite. Highly recommend!
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Mangao Ruxi profile picture
Mangao Ruxi
185 days ago
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We’ve used this service a few times over the years for our house exterior, gutters, and patio, and they always do a great job. They’re reliable, thorough, and often go the extra mile, even with tough stains. Everything is left looking really clean, and they always explain things clearly. We’re very happy with the results and keep coming back.
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Gemma O'Brien profile picture
Gemma O'Brien
232 days ago
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Softwashing UK was able to meet our gutter cleaning needs where others couldn’t. They were professional, reliable, and clearly knew what they were doing. They also did a fantastic job cleaning the render on our garage — it looks so much better now! Great service overall and I would definitely recommend them to others.
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Joseph Kelly profile picture
Joseph Kelly
284 days ago
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+1
Couldn't recommend highly enough. Super efficient and very reasonably priced. I'd definitely use them again
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John profile picture
John
407 days ago
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+6
Many thanks to Softwashing UK for their excellent work at a reasonable price. We had some long standing algae stains on the rendering of the rear walls on our property in Cardiff. And the admin team were great in providing a quote, planning the work, and visited our property beforehand to check access to complete the work. Excellent team who know what they are doing. We are really happy with the results, better than we expected. Thanks.
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Rich Fogg profile picture
Rich Fogg
425 days ago
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+3
Excellent service from start to finish. From initial phone calls with Bernie and Gavin explaining what would be required to clean our residential property to the job being completed exactly as described. Would highly recommend as they have achieved amazing results, very professional. Photos attached: Afterwards photos taken not long after completion so still drying out, the before photos were taken the 24 hours before before.
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Sally profile picture
Sally
508 days ago
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Gavin and the Team at Softwash provided a professional and personal service in cleaning our render - no fuss, no mess. It was brilliant. We cannot recommend them highly enough. Thank you. S & A
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Lynnette Thomas profile picture
Lynnette Thomas
551 days ago
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A fantastic result! Can’t fault the service and highly recommend. Thank you very much!
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Paul Welsh profile picture
Paul Welsh
560 days ago
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We’ve used Softwashing a number of times over the past few years to clean the exterior of our house, gutters and patio. Every time it has been a fantastic service, always going above and beyond, whether it’s attacking a stubborn rust stain or taking time to explain the process. We have recommended them to friends and neighbours and using them every year is testament to how happy we are with the work they do. Thanks!
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Andrew Covell profile picture
Andrew Covell
571 days ago
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The service was great, Gavin arrived on the dot of eight o’clock and he then talked me through the process before starting. He worked diligently using a range of different techniques to address the various issues. At the end the render looked like new! Would definitely recommend and will have them back again when it needs doing again!

Tired of damaging high-pressure cleaning?

Revolutionise Your Building's Exterior with Softwashing UK

Softwashing UK offers a revolutionary, low-pressure exterior cleaning solution that's safe for your building, the environment, and your budget.  

We specialise in soft washing buildings, roofs, and exteriors across the UK, delivering long-lasting results without the risk of damage, with the use of specialist access equipment.

Domestic Exterior Cleaning

At Softwashing UK, we provide comprehensive residential exterior cleaning services, from expert render cleaning to roof, driveway, patio, and brick cleaning. 

Using eco-friendly soft wash methods, we safely remove dirt, algae, and moss, restoring surfaces without damage. Trusted nationwide, we deliver outstanding results that protect your home’s exterior.

Commercial Exterior Cleaning

At Softwashing UK, we offer professional commercial exterior cleaning services tailored to businesses of all sizes.

From render and roof cleaning to cladding, signage, and pathways, we use safe, low-pressure soft wash systems to maintain your property’s appearance. Our reliable service ensures a clean, welcoming environment for staff and visitors.

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Covering

The whole of the UK

Phone Number

0800 078 6677

Email

enquiries@softwashinguk.co.uk

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